Heating-furnace.



W. S. ROCKWELL.

HEATlNG FURNACE. APPLICATION FlLEDAUG.20,19l8.

Patented Dec. 31, 1918;

2 SHEETSSHEET l.

. W. S ROCKWELL.

HEATING FURNACE.

APPLICATION FILED AUG.20,19IE. 1,289 Patented Dec. 31,1918. 2 SHEETS-SHEET 2.

I Ill @Tdh A a WALTER S. ROCKWELL, OF NEW YORK, N. Y., ASSIGNOR T W. S. ROCKWELL COMPANY,

OF NEW YORK, I I. Y., A CORPORATION OF NEW JERSEY.

HEATING-FURNACE.

To all whom it may concern:

Be it known that I, WALTER S. ROCKWELL, a citizen of the United States, residing at 300 West 106 street, New York, county of New York, and State of New York, have invented certain new and useful Improvements in Heating-Furnaces, fully described lltl . heating.

In such furnaces it is desirable to introduce heat at various parts of the heatingchamber and to circulate the live flaming gases through the bottom of the heatingchamber, and to control the egress of the highly heated spent gases of combustion from different parts of the chamber, so as to exert a greater or less heating effect upon any particular part of the charge.

The present invention furnishes means for introducing the flaming gases from liquid fuel-burners .intb difierent parts of the heating-chamber and to control their circulation through the bottom of the heating-chamber; also. the egress of the spent gases therefrom chamber, whereby it provides means for equally heating the floor of the chamber and the bottom of the charge without locating a combustion-chamber beneath the floor, which would render the floor unable to support the heavy loads contemplated.

My construction'is thus completely adapted to heat the bottom of the charge at the same time and equally with the'top and to subject any particular linear part of the charge to a higher temperature than other parts, and to safely sustain any required The invention will be understood by reference to the annexed drawing, in which Specification of Letters Patent.

Application filed August 20, 1918. Serial Ito. 250,652.

at various parts of the Patented Dec. 31, 1918.

Figure l is a horizontal section on line ll in Fig. 3; Fig. 2 is a longitudinal vertical section on line 22 in Fig. 1; Fig. 3 is a cross section on line 3-3 in Fig. 1; and Fig. 4 is a cross section on line 44 in Fig. 1.

a designates the heating-chamber with doorway b and door I) at one end, rear wall 0 at the opposite end, and side-walls d, d" at its opposite sides.

Along the bottoms of the side-wall socalled main ledges e, e are extended longitudinally, being projected upwardly from the chamber-floor far enough to admit spent gas outlet-flues f in their bodies and to intercept the flaming gases from the burneropenings 9 located in the side-walls a little above the floor-level and provided with fluid fuel-burners g.

The outlet-fines enter the ledges laterally close to the floor of the heating-chamber, and thus draw the escaping gases downward close to the charge upon the floor.

Four of these burners are shown in the drawing, two in each side-wall, each of the said burner-openings being connected by an up going vertical fiame-duct h with two I ridges preventing any objects lying upon the floor from covering the said ducts.

Theinner face of the main ledge e or e, next to each burner-opening. is formed as a recess or pocket 6 into which the flaming gases are projected; and which permits their expansion laterally while it forces them up wardly, to circulate in the upper part of the chamber, and downwardly beneath the bottom of the chamber.

Arrows 0 show the circulation of the flaming gases through the heating-chamber and ducts It, a, it.

Arrows 0' show the path of the spent gases through the outlet-fines f The heating of the floor, which is very desirable to secure a uniform heat in a heavy forging or other charge, is efl'ected by two means, first, by the flame-ducts 7:, a, It, which extend beneath the floor and receive the flaming gases; and second, by the discharge of the spent gases through outlet-Hues f, close to the floor, so that the spent gases are necessarily drawn downward to escape from. the chamber. 1 p

The outlet-fines f may be extended to a stack or any other delivery point, and are shown in the drawing extended upwardly into the side-walls of the furnace at the leftside of Fig. 3, and the right-hand side of Fig. 4.

Dampers 7 ma be applied to the upper ends of these out et-flues, of which two are provided on each side of the heating-chamher, to limit the escape of the spent gases from any quarter of the chamber at pleasure, and provide for regulating the heat as desired.

The flaming gases are drawn into and through the flame-ducts is, i, h, by the ejector eflect of the burners in the burner-openings 9.

Two of the flame-ducts under the floor are connected with each of the burners, so as to multiply the heating efl'ect without unduly increasing the number of burners, two ducts being connected at one end to each burneropening by the up-going duct h. The alternate burner-openings -g are located respectively in the opposite walls of the furnace, as shown in Figs. 3 and 4, so that the heat is more equally distributed, and the flaming gas-ducts i for one-half of the burners are disposed between those for the other half.

The ducts i are separated by partitions Z, except where connected to the burner-opem ings by the up-goin ducts h, which partitions form firm supports for the floor, so as to sustain any desired load. The multiplication of the ducts increases the number of partitions, so that an eflicient heating of the floor is secured without weakening its supporting plower.

To carry eavy charges into the furnace, a car is generally used. Such a car is indicated by dotted lines m in Figs. 2 and 3, sustained by balls 12/ fitted to roll upon grooved track-rails n, which are necessarily extended outside the furnace-door, as indicated in Figs. 1 and 2, to sustain the car when withdrawn. The car is not shown in tulllines, as it would obscure the openings of the outlet-flues f; and the ingot p which is shown upon the car in Fig. 3 is omitted in Fig. 2, as it would confuse the drawing.

In the operation of such a car, the balls as- I sume various positions upon the track-rails, and to prevent any of the balls fromjamming against the rear wall of. the heatingming against the rear wall of the heating-chamber, outlet-passages q are formed through the rear walls in line with the trackrails andthe said rails extended thereinto. A hinged flap r is shown fitted to the outer end of each passage, which permits any balls that become crowded into the passage to escape by lifting the flap and rolling out upon the floor. After such occasions, the ap closes automatically to prevent the escape of heat from the chamber.

In furnaces employing such a car the external floor s is commonly at the same level as the bottom of the heating-chamber, so that the car can be readily loaded and unloaded while standing upon the floor outside of the said chamber. 7

The arrows 0' show the circulation of the gases about the ingot p, such circulation through the various flues and flame-ducts cooperating to heat the floor, and bring the circulating gases into contact of the charge upon the car, which charge would thus be equally heated on all sides.

M prior Patent, No. 1,193,824, utilizes a singlh burner and a single as-duct below its floor: and I do not therefore claim such a construction broadly herein.

with all' p arts I Having thus set forth the nature of the invention what is claimed herein the combi- 13111 a metal heating-furnace,

nation, with a heating-chamber having a and a downof the gas-duct with the heating-chamber through the extended into the side-wall ad]acent to each of the down-going flame-ducts, the humeropenings and the outlet-fines being arranged alternately in the opposite side walls, where: by the flaming gas-ducts are located beneath the floor for the burners in one side-wall, intermediate to the flaming gas-ducts connecltled with the burners in. the oppositevsidew-a 2. Tn a metal heating-furnace, the combination, with a heating-chamber having a burner-opening inthe side-wall with a fluid fuel-burner arranged to introduce flaming gases adjacent to thefloor, a ledge upon the floor of the heating-chamber before the burner op'ening to deflect the flaming gases therefrom, a flaming gas-duct below the floor floor of the same, an outlet-flue connected at one endwith the burner-open- I In a metal heating-furnace, the combiunease? along the side-walls, and supplemental smaller ledges along'the sides of the Work ing-floor, the main ledges operating upon one side of the chamber to deflect the gases from the burners, and the main ledge upon the opposite side of the chamber having outlet-flues extended laterally in the ledge, atleast one flaming gasduct located below the floor and connected at one end to the burneropening, and having at its opposite end a down-going duct extended through the supplemen-tal ledge to introduce the flaming gases into the flaming gas-duct.

4. In a metal heating-furnace, the combination, .with a heating-chamber having a ledge extended along the edge of its floor, a plurality of recesses in the upper side of such ledge, a burner-opening in the side-wall of the heating-chamber extended into each of the said recesses, and a burner applied to each of said burner-openings, the gases therefrom being mixed in the said recesses and deflected upwardly by the ledge, as and for the purpose set forth.

5. A metal heating-chamber having a door-opening at one end and a rear Wall at the opposite end, rails extended from the doorway through the rear wall, outlet ballpassages extended through the rear wall for closing the outer ends of the passages.

6. In a metal heating-furnace, the combination, with a heating-chamber having a door-opening at one end and a rear wall at the opposite end, of grooved rails extended through the doorway to the rear wall, ball passages extended through the rear wall with the rails continued therein, balls fitted to the grooved rails, and a car-body fitted to the tops of the balls to move thereon, and hinged flaps closing the outer ends of the ball-passages, and permitting the balls to move automatically from the same through the chamber floor to the other end of the flaming-gas-duct to introduce the flaming gas thereinto, into the ledge near such downgoing duct.

7. A metal-heating chamber having a door-opening at one end and a rear wall atthe opposite end, rails extended from the doorway to the rear wall, outlet ball-passages extended through the rear wall with and an outlet flue extended the rails continued therein, and means for closing and openlng the outer ends of the passages.

In testimony whereof I have hereunto set my hand.

WALTER S. ROCKWELL. 

